216 lines
7.9 KiB
HTML
216 lines
7.9 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Establish a secure client with SSL_ APIs" />
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<meta name="abstract" content="This example enables a client application using the SSL_ APIs to communicate with a server application that uses the SSL_APIs." />
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<meta name="description" content="This example enables a client application using the SSL_ APIs to communicate with a server application that uses the SSL_APIs." />
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<meta name="DC.Relation" scheme="URI" content="x1ssl.htm" />
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<meta name="DC.Relation" scheme="URI" content="cssl2.htm" />
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<meta name="DC.Relation" scheme="URI" content="x1sslserver.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="x1sslclient" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Establish a secure client with SSL_ APIs</title>
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</head>
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<body id="x1sslclient"><a name="x1sslclient"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Establish a secure client with SSL_ APIs</h1>
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<div><p><span>This example enables a client
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application using the SSL_ APIs to communicate with a server application that
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uses the SSL_APIs.</span></p>
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<div class="section"></div>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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<pre>/* SSL Client Program using SSL_Init_Application */
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/* Assummes that application id is already registered */
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/* and a certificate has been associated with the */
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/* application id. */
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/* No parameters, some comments and many hardcoded */
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/* values to keep it short and simple */
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/* use following command to create bound program: */
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/* CRTBNDC PGM(MYLIB/SSLCLIAPP) */
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/* SRCFILE(MYLIB/CSRC) */
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/* SRCMBR(SSLCLIAPP */
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <ctype.h>
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#include <sys/socket.h>
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#include <qsossl.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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/* Making this simple - no parameters */
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void main(void)
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{
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SSLHandle *sslh;
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SSLInitApp sslinit;
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struct sockaddr_in address;
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int buf_len, rc = 0, sd;
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char buff1[1024];
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char buff2[1024];
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/* only want to use 1 cipher suite */
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unsigned short int cipher = SSL_RSA_WITH_RC4_128_SHA;
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/* hardcoded IP address */
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char addr[12] = "16.35.146.84";
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void * malloc_ptr = (void *) NULL;
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unsigned int malloc_size = 8192;
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/* memset sslinit structure to hex zeros */
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memset((char *)&sslinit, 0, sizeof(sslinit));
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/* fill in values for sslinitapp structure */
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/* using an existing app id */
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sslinit.applicationID = "MY_CLIENT_APP";
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sslinit.applicationIDLen = 13;
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sslinit.localCertificate = NULL;
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sslinit.localCertificateLen = 0;
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sslinit.cipherSuiteList = NULL;
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sslinit.cipherSuiteListLen = 0;
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/* allocate and set pointers for certificate buffer */
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malloc_ptr = (void*) malloc(malloc_size);
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sslinit.localCertificate = (unsigned char*) malloc_ptr;
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sslinit.localCertificateLen = malloc_size;
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/* initialize ssl call SSL_Init_Application */
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rc = SSL_Init_Application(&sslinit);
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if (rc != 0)
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{
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printf("SSL_Init_Application() failed with rc = %d and errno = %d.\n",
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rc,errno);
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return;
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}
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/* initialize a socket */
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sd = socket(AF_INET, SOCK_STREAM, 0);
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if (sd < 0)
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{
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perror("socket() failed");
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return;
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}
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/* enable SSL support for the socket */
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sslh = SSL_Create(sd, SSL_ENCRYPT);
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if (sslh == NULL)
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{
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printf("SSL_Create() failed with errno = %d.\n", errno);
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close(sd);
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return;
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}
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/* connect to the server using a set port number */
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memset((char *) &address, 0, sizeof(address));
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address.sin_family = AF_INET;
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address.sin_port = 13333;
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address.sin_addr.s_addr = inet_addr(addr);
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rc = connect(sd, (struct sockaddr *) &address, sizeof(address));
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if (rc < 0)
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{
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perror("connect() failed");
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close(sd);
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return;
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}
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/* set up to call handshake, setting cipher */
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sslh -> protocol = 0;
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sslh -> timeout = 0;
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sslh -> cipherSuiteList = &cipher;
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sslh -> cipherSuiteListLen = 1;
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/* initiate the SSL handshake - as a CLIENT */
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rc = SSL_Handshake(sslh, SSL_HANDSHAKE_AS_CLIENT);
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if (rc != 0)
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{
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printf("SSL_Handshake() failed with rc = %d and errno = %d.\n",
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rc, errno);
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close(sd);
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return;
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}
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/* send a message to the server using the secure session */
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strcpy(buff1,"Test of SSL_Write \n\n");
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buf_len = strlen(buff1);
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rc = SSL_Write(sslh, buff1, buf_len);
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if (rc != buf_len)
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{
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if (rc < 0)
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{
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printf("SSL_Write() failed with rc = %d and errno = %d.\n",rc,errno);
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SSL_Destroy(sslh);
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close(sd);
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return;
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}
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else
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{
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printf("SSL_Write() did not write all data.\n");
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SSL_Destroy(sslh);
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close(sd);
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return;
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}
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}
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/* write the results to the screen */
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printf("SSL_Write() wrote ...\n");
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printf("%s\n",buff1);
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memset((char *) buff2, 0x00, sizeof(buff2));
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/* receive the message from the server using the secure session */
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rc = SSL_Read(sslh, buff2, buf_len);
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if (rc < 0)
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{
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printf("SSL_Read() failed with rc = %d.\n",rc);
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SSL_Destroy(sslh);
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close(sd);
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return;
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}
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/* write the results to the screen */
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printf("SSL_Read() read ...\n");
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printf("%s\n",buff2);
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/* disable SSL support for the socket */
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SSL_Destroy(sslh);
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/* close the connection by closing the local socket */
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close(sd);
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return;
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}</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="x1ssl.htm" title="You can create secure server and clients using either the Global Secure ToolKit (GSKit) APIs or the Secure Sockets Layer (SSL_) APIs.">Examples: Establish secure connections</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="cssl2.htm" title="The SSL_ APIs allow programmers to create secure socket applications on iSeries.">SSL_ APIs</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="x1sslserver.htm" title="In addition to creating secure applications using the GSKit APIs, you can also use the SSL_ APIs. SSL_ APIs only exist in the i5/OS operating system.">Example: Establish a secure server with SSL_ APIs</a></div>
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</div>
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</div>
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</body>
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</html>
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